Port of upstream grok-build 0.2.105 + 0.2.118.
- CompactionToolChoice (auto default | none), resolved env
KIGI_COMPACTION_TOOL_CHOICE > [features].compaction_tool_choice >
remote settings. Some OpenAI-compatible servers reject
tool_choice:"none" with tools attached, failing every long-session
compaction; auto keeps them working (the summarization prompt already
forbids tool use). Threaded from agent + subagent spawn through
CompactionConfig into generate_session_compact; the Responses gate
counts hosted tools too, so a hosted-only request still carries the
configured choice.
- is_context_length_error recognizes the "current message ... exceeds
budget" phrasing, so that overflow is Fatal instead of burning the
retry budget on a deterministic failure.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KSy9S31pZNWXtRZNVJ1sDf
ZacharyZhang-NYandClaude Fable 5
1ae803519e